Overview
The MAX3232ECDG4, produced by Texas Instruments, is a 3-V to 5.5-V multichannel RS-232 line driver and receiver. This device is designed to provide an electrical interface between an asynchronous communication controller and a serial-port connector, adhering to the TIA/EIA-232-F and ITU V.28 standards. It features a dual charge-pump circuit that allows operation from a single 3-V to 5.5-V supply, making it versatile for various applications. The MAX3232ECDG4 includes two line drivers and two line receivers, along with robust ESD protection, ensuring reliable performance in diverse environments.
Key Specifications
| Parameter | Min | Typical | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3.0 | 3.3 / 5.0 | 3.6 / 5.5 | V |
| Driver High-Level Input Voltage (VIH) | 2.0 | - | 5.5 | V |
| Driver Low-Level Input Voltage (VIL) | 0 | - | 0.8 | V |
| Receiver Input Voltage (VI) | -25 | - | 25 | V |
| Operating Free-Air Temperature | -40 | - | 85 | °C |
| Supply Current (ICC) | 0.3 | 1 | - | mA |
| Driver Output Slew Rate (SR(tr)) | 4 | - | 30 | V/μs |
| ESD Protection (HBM) | ±15 | - | - | kV |
| ESD Protection (IEC61000-4-2, Contact Discharge) | ±8 | - | - | kV |
| ESD Protection (IEC61000-4-2, Air-Gap Discharge) | ±15 | - | - | kV |
Key Features
- ESD protection for RS-232 bus pins: ±15 kV (HBM), ±8 kV (IEC61000-4-2, Contact discharge), and ±15 kV (IEC61000-4-2, Air-gap discharge).
- Meets or exceeds the requirements of TIA/EIA-232-F and ITU V.28 standards.
- Operates with 3-V to 5.5-V VCC supply.
- Operates up to 250 kbit/s data signaling rates.
- Two drivers and two receivers.
- Low supply current: 300 μA (typical).
- External capacitors: 4 × 0.1 μF.
- Accepts 5-V logic input with 3.3-V supply.
- Pin compatible to alternative high-speed devices (1 Mbit/s): SN65C3232E and SN75C3232E.
Applications
- Industrial PCs.
- Wired networking.
- Data center and enterprise computing.
- Battery-powered systems.
- Notebooks and laptops.
- Palmtop PCs and hand-held equipment.
Q & A
- What is the MAX3232ECDG4 used for?
The MAX3232ECDG4 is used to provide an electrical interface between an asynchronous communication controller and a serial-port connector, adhering to RS-232 standards.
- What are the operating voltage ranges for the MAX3232ECDG4?
The device operates with a 3-V to 5.5-V VCC supply.
- What is the maximum data signaling rate of the MAX3232ECDG4?
The device operates up to 250 kbit/s.
- How many drivers and receivers does the MAX3232ECDG4 have?
The device has two line drivers and two line receivers.
- What kind of ESD protection does the MAX3232ECDG4 offer?
The device offers ±15 kV (HBM), ±8 kV (IEC61000-4-2, Contact discharge), and ±15 kV (IEC61000-4-2, Air-gap discharge) ESD protection.
- What are the typical supply current and external capacitor requirements for the MAX3232ECDG4?
The typical supply current is 300 μA, and it requires 4 × 0.1 μF external capacitors.
- Is the MAX3232ECDG4 compatible with other high-speed devices?
Yes, it is pin compatible with alternative high-speed devices such as SN65C3232E and SN75C3232E.
- What are some common applications of the MAX3232ECDG4?
Common applications include industrial PCs, wired networking, data center and enterprise computing, battery-powered systems, notebooks, laptops, palmtop PCs, and hand-held equipment.
- What is the operating temperature range for the MAX3232ECDG4?
The operating free-air temperature range is from –40°C to 85°C.
- How does the MAX3232ECDG4 handle logic input voltages?
The device accepts 5-V logic input with a 3.3-V supply.
